Question

. Describe the organization of the peripheral nervous system

Key:       nerves                 white                    cranial                                  spinal                    ganglia                 PNS                        motor                   sensory

Bundles of myelinated axons that form in the PNS are called ____________

_____________ nerves are directly connected to the brain.

_______________ nerves are connections between the PNS and spinal cord.     

Nerves of PNS have myelin so nerves look glistening _______________

___________________are clusters of neuronal cell bodies outside of the CNS.

Nerves may also be classified as sensory or motor.   ___________ nerves carry sensory info to the CNS

______________ nerves carry motor commands from the CNS to effector organs.

The ______________consists of the somatic and autonomic nervous systems.

3. Identify the differences between the somatic and autonomic nervous systems

The _____________ division of the PNS is to sense external environment and control skeletal muscles.

The _________________division of the PNS regulates homeostasis and organ function (smooth muscles, cardiac muscles, endocrine glands, exocrine glands.)

The ( somatic / autonomic) division of the PNS will command your leg muscles to contract.

The (somatic / autonomic) division of the PNS will command your intestines to engage in peristalsis.

The (somatic / autonomic) division of the PNS will convey sensory information to the CNS.

The (somatic / autonomic) division of the PNS will speed up or slow down the beat of the heart.

Autonomic nervous system consists of __________________ and ________________ divisions.

Sympathetic division is associated with the concept of “flight or fight”

Parasympathetic division is associated with rest, eat and digest.

(sympathetic / parasympathetic ) increases activity of small intestine to promote nutrient absorption

(sympathetic / parasympathetic ) inhibits activity of small intestine.

(sympathetic / parasympathetic )   increase heartbeat and force of contraction.

(sympathetic / parasympathetic ) slows heartbeat.

Answer 1

Bundles of myelinated axons that form in the PNS are called ________NERVES____

_____CRANIAL________ nerves are directly connected to the brain.

_____SPINAL__________ nerves are connections between the PNS and spinal cord.     

Nerves of PNS have myelin so nerves look glistening ____WHITE___________

______GANGLIA_____________are clusters of neuronal cell bodies outside of the CNS.

Nerves may also be classified as sensory or motor.   __SENSORY_________ nerves carry sensory info to the CNS

_____MOTOR_________ nerves carry motor commands from the CNS to effector organs.

The __PNS____________consists of the somatic and autonomic nervous systems.